| Position: | Left wing |
| Played For: | Boston Bruins |
| Shoots: | Left |
| Height Ft: | 5 |
| Height In: | 10 |
| Weight Lb: | 175 |
| Birth Date: | 1909 9, mf=yes |
| Birth Place: | Montreal, Quebec, Canada |
| Career Start: | 1931 |
| Career End: | 1945 |
Walter Herbert "Happy" Harnott (September 24, 1909 in Montreal, Quebec — January 8, 1977) was a Canadian professional ice hockey player who played six games in the National Hockey League during the 1933–34 season, with the Boston Bruins. The rest of his career, which lasted from 1931 to 1945, was spent in various minor leagues.
| Regular season | Playoffs | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Team | League | GP | PIM | GP | G | A | Pts | PIM | |||||
| 1928–29 | Montreal Bell Telephone | MTRHL | 2 | 1 | 1 | 2 | 2 | — | — | — | — | — | ||
| 1929–30 | Montreal Columbus Club | MCHL | 10 | 2 | 0 | 2 | 2 | — | — | — | — | — | ||
| 1930–31 | Montreal Columbus Club | MCHL | 9 | 3 | 0 | 3 | 6 | 2 | 0 | 0 | 0 | 6 | ||
| 1931–32 | Boston Cubs | Can-Am | 18 | 2 | 1 | 3 | 6 | 5 | 1 | 0 | 1 | 6 | ||
| 1931–32 | Montreal AAA | MCHL | 8 | 4 | 1 | 5 | 10 | — | — | — | — | — | ||
| 1932–33 | Boston Cubs | Can-Am | 23 | 4 | 1 | 5 | 10 | — | — | — | — | — | ||
| 1933–34 | Boston Bruins | NHL | 6 | 0 | 0 | 0 | 2 | — | — | — | — | — | ||
| 1933–34 | Boston Cubs | Can-Am | 38 | 10 | 5 | 15 | 16 | 3 | 0 | 1 | 1 | 0 | ||
| 1934–35 | Syracuse Stars | IHL | 5 | 0 | 1 | 1 | 0 | — | — | — | — | — | ||
| 1934–35 | Boston Cubs | Can-Am | 40 | 11 | 15 | 26 | 20 | 3 | 1 | 0 | 1 | 0 | ||
| 1935–36 | Boston Cubs | Can-Am | 22 | 3 | 4 | 7 | 14 | — | — | — | — | — | ||
| 1935–36 | Calgary Tigers | NWHL | 14 | 4 | 3 | 7 | 0 | — | — | — | — | — | ||
| 1936–37 | St. Louis Flyers | AHA | 7 | 1 | 0 | 1 | 2 | — | — | — | — | — | ||
| 1937–38 | St. Paul Saints | AHA | 34 | 12 | 15 | 27 | 4 | — | — | — | — | — | ||
| 1937–38 | St. Louis Flyers | AHA | 8 | 0 | 1 | 1 | 0 | — | — | — | — | — | ||
| 1938–39 | St. Louis Flyers | AHA | 47 | 16 | 25 | 41 | 31 | 7 | 3 | 4 | 7 | 2 | ||
| 1939–40 | St. Louis Flyers | AHA | 48 | 24 | 29 | 53 | 18 | 5 | 1 | 2 | 3 | 5 | ||
| 1939–40 | Omaha Knights | AHA | — | — | — | — | — | 3 | 1 | 1 | 2 | 0 | ||
| 1940–41 | St. Louis Flyers | AHA | 48 | 13 | 24 | 37 | 10 | 9 | 0 | 3 | 3 | 2 | ||
| 1941–42 | St. Louis Flyers | AHA | 42 | 7 | 10 | 17 | 8 | 3 | 0 | 0 | 0 | 2 | ||
| 1942–43 | Montreal Royals | QSHL | 9 | 0 | 2 | 2 | 2 | — | — | — | — | — | ||
| 1942–43 | Montreal RCAF | MCHL | 7 | 2 | 3 | 5 | 2 | 2 | 4 | 1 | 5 | 2 | ||
| 1943–44 | Montreal RCAF | MNDHL | 4 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | ||
| 1944–45 | Montreal RCAF | MCHL | 12 | 6 | 18 | 24 | 0 | 6 | 1 | 3 | 4 | 6 | ||
| 1944–45 | Valleyfield Braves | QPHL | — | — | — | — | — | 1 | 0 | 0 | 0 | 0 | ||
| AHA totals | 234 | 73 | 104 | 177 | 73 | 27 | 5 | 10 | 15 | 11 | ||||
| NHL totals | 6 | 0 | 0 | 0 | 0 | — | — | — | — | — | ||||